Table 1.

Description of the uRT‐linac 506c platform.

Feature	Description
Configuration	C‐arm linac integrated with 16‐slice helical CT
Enclosed CT bore	70 cm in diameter
Linac gantry rotation	−362° to 182°, 7°/s rotation speed at maximum
Treatment beam	6 MV (FF/FFF) X ray
Nominal dose rate	25–600 MU/min (FF), 75–1400 MU/min (FFF)
MLC design	1.0 cm × 20 pairs, 0.5 cm × 40 pairs, 2.5 cm/s leaf‐only speed, 5.5 cm/s with carriage together
Maximum field size	40 × 40 cm2
Delivery techniques	3D‐CRT, sIMRT, dIMRT, uARC
Imaging systems	MV portal, MV‐CBCT, kV‐FBCT
Treatment couch	4‐DOF carbon fiber couch with movable base